The Shifter’s Desire by Selena Scott

It’s all they can do to fight against the darkness and tumble hard into love.

Life is long, especially for Arturo. Though he was born a mortal, now he’s a bear shifter and the former right-hand-man to a demon. He’s been alive for more than four centuries, kept alive by his connection to the demon who has enslaved and tortured him at every turn. And they wonder why he’s such a jerk…
Now, Arturo is made to endure a new kind of torture. He’s trapped with a group of seven travelers who, to their credit, are attempting to slay the demon. But their affectionate, loving, joking ways threaten to drive him up the wall. All he wants is silence, all he wants is eternal rest. All he wants is darkness. That is, until he realizes that his life doesn’t have to be quite as lonely as he’d thought.
Martine West is not exactly a human, not exactly an angel. She is a born demon-hunter and, oh yeah, she’s composed completely of light. Though she looks like a mortal woman, she is otherworldly, ethereal, and determined to slay the demon, even though the end of the demon’s life will also mark the end of hers. Before her life comes to an end, she wishes only for one thing, to feel like a woman, a real woman. She wants only to experience the attention of the one man for whom she’s carried a secret torch for centuries.

The group of the Seventh Shifter series are all present and accounted for, racing the clock and racing the demon. It’s all they can do to fight against the darkness and tumble hard into love.